The most interesting coast of Turkey is from Kusadasi and south. The northern coast is rocky and not sheltered from the north winds. Vosporos and Istanbul are offered for a perfect cruise from a yacht based there.
Greek charter yachts or Turkish charter yachts are based in Marmaris, Bodrum, Gocek or Antalya. 

-MARMARIS: Offering all modern facilities, Marmaris also retains traditional colour and customs. Bazaars can be found here offering a wide variety of merchandise. There is also a fishing village that shelters yachts all year round, located in a beautiful port with pines reaching down to the sea.
-DATCA: Quiet and picturesque with beautiful beaches in secluded bays.
-KNIDOS: Knidos is an ancient city containing remains of the Temple of Venus and a Byzantine church. Green and peaceful it is a “must see” for lovers of antiquity.
-BODRUM: Well know as “Alikarnassos” in ancient times. Bodrum is home to one of the Seven Wonders of the World, as well as many other remains of her long history. Today, it is a very lively city, and this fact, along with such monuments from the past, attracts many visitors. Highlights: Castles, towers, mausoleum, archaeological finds.
-ASIN BAY: Built on top of the ancient city of Iasos, the bay remains tranquil with beautiful beaches. Highlights: Byzantine castle, archaeological finds.
-DIDYMA: In ancient times, this was known as Apollo's city, with the ruins of his Temple contrasting the modern life of the city.
-KUSADASI: Ruins reveal that Kusadasi was inhabited during the Hellenistic, Roman and Medieval periods. Today it boasts a lively nightlife and shopping district to attract tourists.